Niter-decomposing apparatus



N. L. HEINZ. NITER DECOMPOSING APPARATUS. APPLICATION FILED SEPT. 15. i915.V

l, 8 1 5, 884. Imnwd Sept; 9, .1919.

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NICHOLAS L. HEINZ, 0F LA. SALLE, ILLINOIS..

NITER-DECOMPOSING APPARATUS.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Application filed September 15, 1915. Serial No. 50,910.

To all whom t may concern:

lieV it known that I, Nici-iones L. Heinz, a citizen ot' the United States, i'esidingat La Salle, in the county of La Salle and State of Illinois, have invented a new and use'tul Niter-Dec(imposing Apparatus, of Which the :Following is a specilication.

lvly invention relates to appa 'a-tus for decomposing nitcr, and the objects ot' my in volition are, first, to provide means for decomposing the sodium nitrate in a sulfuric acid system irrespective oi the working ot the balance oli the system; second, to enable independent control of the decomposing action oi the sodium nitrate; third, to alford a system of decomposing niter of greater 'elliciency than has heretofore been attained; l

and other objects to beconie apparent from the description to follow.

Heretolore in sulfuric acid systems the necessary nitrogen compounds have been introduced between the sulfur burners and the Glover tower by placing in the liuc leading from the burners to the tower, one or moreA cast iron boxes containing sodiuni nitrate and sulluric acid, depending on the heat passing 'from the burners to decompose the sodium lnitrate and liberate the nitrogen compounds. By said system the liberation ot the nitrogen compounds cannot be controlled except by controlling the heat at the burners, which is very `unsatisfaotory and at times results in the boiling over oli the sodium nitrate and thus filling the flue. it"urtherniore it is very desirable to be able at all times to control the liberation of the nitrogen compounds. By the use of my invention the heat admitted to the castiron boxes containing sodium nitrate is under absolutoV control of the operatorso that when the process is for any reason interrupted the liberation of the nitrogen compounds can be controlled accordingly.

To describe iny invention so that others versed in the art to which it pertains can ineke and use the saine l have illustrated it pn the accoi'npanying drawing forming a part of this specilicatiou, in Whichz Figure l, is a longitudinal sectional view of a portion oi? a `llue leading from the sulfur burners to the Glover tower, showing an embodiment of my invention, and Fig. 2,

a sectional View taken on line 2-2 of Similar reference characters refer to similar parts throughout both views.

The flue 3 leads from the sulfur burners, not shown, to the Glover tower, not shown, and for a portion of its course it is preferably extended at a lower level as indicated at t having the downward bend and the upward bend G. The cast iron boxes 7 are placed just below the part` l ot' liuc 3 with their upper discharge openings -communicating with the flue so that the nitrogen'compounds liberated from Ithe sodium nitrate placed in the boxes 7 will enter the part t of flue 3 and mix with the sulfurous gases coming from the burners. The bends 5 and V6 in the flue 3 serve to give a whirling mo- 'flue l0. The lire under each box 7 is regulated to retain the contents of the box at the desired temperature to attain the best results. Suitable shut oil dampeis 'll are provided above the boxes 7 to shut olf coin inunication with flue 3 Whenever necessary, as for instance when a neuT box has to be substituted for a broken one. Thus it is clear that the supply of nitrogen compounds can be perfectly controlled even during interruptions due to breakdowns, changes in temperature, atmospheric changes, etc.

Each box 7 is provided with a discharge snout 12 atV its bottom through which the reinaining niter cake is discharged into a cake niold 13 after the nitrogen compounds have been sufficiently liberated. The exit of the snout 19. is normally closed by a suitable cap lll. l

It will be understood that'thc size, shape and arrangement of the parts may be varied without in the least departing from the scope of my invention.

Having thus Ifully described my invention what I claim as new and desire to secure by Letters Patent is l. In a niter decomposing apparatus, a liuc, a sodium nitrate receptacle having its upper open part in communication with said flue, an independent -liuri'iace for heating said receptacle, whose hot gas flue is prevented 'from communi iating with said first named flue by the interpositionng of said reoepom tutti tl. tu .oitei decomposing' oppormi-,usi o, time, at eoolium mtiflte ieeeptztcle provided with :i ellseiiotge liovliig; 'ite tippeif l tion with sold :timea ooo independent tui'oztee :Eoil heating @and receptacle Wliose liot Tieniti@ iii. its bottom omi open port 11o. eommumeit.-

flue would communicate Witli seid tliet named 'll-lue if seid i'eeeptaele were removed enel memos between. Seidl two time toi" toire- Ventingl eommunicotion between the seid two Hoes when the teceptoole is i'emoveolu 3. ln 2t nitei decomposing apparatus, o Hue, o lire box eoiopiising a, tlue colineatin?, Witlo- Sovielv :tiret oatmeal time, o sodium iiitmte reeeptoole in the loot named tlue :Miel moi'- mally shutting ott eommuiiieetioii between said two lines enel o communication `beto/een soicl two tlues so tiempei' to Shut ott the tlizit the eatin-l receptacle een loe ieuilotetl without opening eoiiiiiiuioication between Seial two tluea Ll. in o reiter decomposing apparatus? o horizontally dioposeci tloe, si lii'e lool; eo piisiligg a` vertically disposed time eonneotiiit'1 with said horizontally disposed. time, at eoclium nitrate receptacle in the uppei' peut of Seidl lest maimed flue incl Donnelly sluittiig ott' eommunieotioo between the seid two linee ood, t cloiilpeito eliutotl tlie eoiiimoiiliu cation between said two time@ so that tllesind i'eeeptzlele een be iemovecl Without opeiiiig; communication tlueo.

lo teetimony whereof lt lleve signed my neme to this speeieetioii in presence of at subseiibing `witness this 9th doy o" August, i915, :it Pittsburgh, Pennsylvania.

llllClilLot L. llliltlll.

between seid two "Witness C. Roue. 

